Yu-mi gets a job using Hyun-joo's university degree and even imitates the way Hyun-joo lives. After marrying a promising businessman, Yu-mi is satisfied with her life.

As Ji-hoon comes closer to success, Yu-mi gains the attention of the public. Yu-mi is cornered when Hyun-joo learns that Yu-mi stole her identity.

The relationship between Yu-mi and Ji-hoon worsens, and a scandal about Ji-hoon's private life is exposed. Yu-mi is confused about her identity and feels guilty about Hyun-joo.

Yu-mi can't be controlled any longer and Ji-hoon plans to send her somewhere she'll be cut off from the world. Yu-mi finds out and forms her own plan.